Selective His-bundle Pacing May Preserve Intrinsic Repolarization as Well as Depolarization
Jason S Chinitz1, Alan Scheinbach1, Lawrence Ong1
1Southside Hospital, Northwell Health Physician Partners, Bay Shore, NY.
Summary
Selective His-bundle pacing in patients with atrial fibrillation preserves intrinsic ST- and T-wave patterns. This method allows for accurate electrocardiogram interpretation, unlike standard ventricular pacing.
Area of Science:
- Cardiology
- Electrophysiology
- Medical Devices
Background:
- Chronic atrial fibrillation often necessitates pacemaker implantation.
- Traditional ventricular pacing can alter electrocardiogram (ECG) repolarization patterns.
- His-bundle pacing offers a potential alternative for preserving cardiac electrical function.
Observation:
- A 79-year-old male with atrial fibrillation received a single-chamber His-bundle pacemaker.
- Post-implantation ECG showed selective His-bundle capture with a narrow QRS.
- Repolarization patterns closely resembled baseline ECG, without ventricular pacing hallmarks.
Findings:
- Selective His-bundle capture maintained physiological depolarization patterns.
- Intrinsic ST- and T-wave patterns were preserved, unlike with ventricular pacing.
- This preservation facilitates accurate ECG interpretation.
Implications:
- Selective His-bundle pacing may offer advantages in maintaining normal repolarization.
- Accurate ECG interpretation is possible with selective His-bundle pacing.
- This technique could improve patient management and diagnostic capabilities in pacemaker patients.
Keywords:
Cardiac resynchronizationHis-bundle pacingphysiologic conductionrepolarizationselective His-bundle pacingMore Related Videos
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